Improve debug info

[wsdjeg]

PR Prelude

Thank you for working on SpaceVim! :)

Please complete these steps and check these boxes before filing your PR:

• I have read and understood SpaceVim's CONTRIBUTING document.
• I have read and understood SpaceVim's CODE_OF_CONDUCT document.
• I have updated the Following-HEAD page for this PR.
• I understand my PR may be closed if it becomes obvious I didn't actually perform all of these steps.

Why this change is necessary and useful?

improve the debug info.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@f0276a1). Click here to learn what that means.
The diff coverage is 20.45%.

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